Ritchie, who became a regular starter for Edinburgh under Cockerill, is now hoping to come out on top against his ex-head coach when Scotland meet England in Saturday's Calcutta Cup clash at Murrayfield.
Ireland head coach Andy Farrell has revealed that Tadhg Furlong, James Ryan and Iain Henderson are set to return to training on Tuesday as they prepare to face Wales in the Six Nations opener against Wales on Saturday.
With the Welsh regions underperforming in Europe, the majority of the squad assembled by Pivac might be short of confidence and form, but Wales seem to thrive when they are written off - and Ireland are aware of that.
It’s safe to say that Eddie Jones’ England have had an eventful start to the week. From Owen Farrell being ruled out of the Six Nations, to a Covid-19 case and being evacuated from their hotel in Brighton. Learn the latest as the Six Nations draws ever closer.